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Poster: Frank Panucci Date: Apr 20, 2012 12:25pm
Forum: prelinger Subject: Looks like the latest encode is mostly cool!

Re Home Movies Can 71123:

It's encoded an 18 frames per second, which is perfect for old home movies. The streaming preview seems to indicate the "wobbly" effect is gone. There are no smeary doubled frames or interlacing artifacts.

However...

The largest AVI version is encoded as mjp2, or Motion JPEG 2000. G-Spot provides the video's technical details, but Windows Media Player, Media Player Classic, and VLC won't play it. It will not load into any of several transcoding and video editing apps I have installed, and I have lots.

Looks like the new encodes are almost there, though. All we need now is a more accessible codec for the highest-res files...

This post was modified by Frank Panucci on 2012-04-20 19:25:23

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Poster: Administrator, Curator, or Stafftracey pooh Date: Jun 14, 2012 1:42pm
Forum: prelinger Subject: Re: Looks like the latest encode is mostly cool!

mplayer (and ffplay, part of ffmpeg package, when compiled with config option -"-enable-libopenjpeg") can play it. (as these are very big images *and* JPEG-2000 compression (hard to decode-on-the-fly at video framerates) you'll either drop frames, play slow, or need a very fast machine 8-)

the .avi wasn't 100% imagined to be playable by all right out of the gate.
it is solely a lossless AVI wrapper around jp2 images as a better alternative
to a totally unplayable corresponding .zip file of jp2 images
(which is what the item starts out as).

so that is, we are altering the container a bit in a lossless way, allowing some players to be able to play it, realizing that not all players will be able to play it yet.

hope that makes sense!

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Poster: Scribble Date: Apr 20, 2012 1:46pm
Forum: prelinger Subject: Re: Looks like the latest encode is mostly cool!

Yes...this encoding is perfect! I was able to work with the mp4 with no trouble at all...as for the avi, it looks very promising, with such a large frame size, but my software (After Effects running on a MAC) can't decode it...perhaps if the codec was available online...anyone have a link?

Great work guys..., I'm sure many people will be thrilled if the rest of them end up like this, at their native frame rate.

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Poster: Administrator, Curator, or StaffRick Prelinger Date: Apr 21, 2012 6:18am
Forum: prelinger Subject: Re: Looks like the latest encode is mostly cool!

Skip is now re-encoding the mp4s that come from our film-to-tape transfers, but this is not one of them. 71123 is a home movie scan made on our Muller Framescanner at Internet Archive. We're just starting to load these and this is only a test -- note that its brightness and gamma aren't yet adjusted. I'll pass on your posts.

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Poster: Scribble Date: Apr 22, 2012 1:02pm
Forum: prelinger Subject: Re: Looks like the latest encode is mostly cool!

Is there a way we will be able to tell which mp4s, of the one's already on the site, are re encoded by Skip?